Coating-machine.



H CABLE.

COATING MACHINE- APPUCATION HLED MAR. 7,1916. 1 263,205. Patented Nov. 28, 1916.

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H CARLE.

COATING MACHINE.

APPLICATION FILED MAR. 1, 19m.

Patented Nov. 28, 1916.

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WITNESSES UNITED STATES PATENT OFFICE.

HAROLD OARLE, OF BUFFALO, NEW YORK, ASSIGNOR TO F. N. BURT COMPANY, LIMITED,

OF BUFFALO, NEW YORK, A CORPORATION OF ONTARIO, CANADA.

COATING-MACHINE.

Specification of Letters Patent.

Patented NOV. 28, 1916.

Original application filed May 5, 1914, Serial No. 836,400. Divided and. this application filed March '7, 1916. Serial No. 82,556.

useful Improvements in Coating-Machines,

. of which the following is a full, clear, and

exact description, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to coating machines, and with respect to its more specific features, to devices adapted to coat articles with adhesive.

One of the objects of the invention is to provide a machine of a simple character adapted to rapidly and efliciently coat surfaces with adhesive.

Another object of the invention is to provide a practical automatically operating device for' covering a surface with an adhesive coat of substantially uniform depth throughout its area.

Other objects will be in part obvious and in part pointed out hereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts which will be exemplified in the construction hereinafter set forth, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings forming part of this specification, and wherein similar reference characters refer to similar parts throughout the several views, Figure 1 is an elevation of a portion of a labeling machine embodying the invention; Fig. 2 is a plan view of a portion of the machine shown in Fig. 1; and Fig. 3 is an elevation of the right-hand end of the machine shown in Fig. 1, partly in section, and somewhat enlarged for a clearer disclosure of parts. Fig. 4 is a side view of the lower portion of Fig. 3.

This application is a division of applicants case, Serial No. 836,400, filed May 5, 1914, and the general construction of the machine may be briefly described as follows:

The numeral 1 indicates a table upon which the various elements of the machine are supported.

The numerals 2 indicate a series of labelsupporting devices, of which there are four, disposed at angles of degrees to each other and carried by radial arms 3 extendmg from a rotary shaft 4 supported in a standard 5 bolted to the upper surface of the table 1.

6 indicates a counter-shaft continuously driven from any suitable source of power, and 7 indicates a cam shaft continuously driven from the counter-shaft 6 through the instrumentality of sprocket wheels 8 and9 and a sprocket chain 10.

Fixed to the shaft 1, or forming part of the rotary arms 3, is a mutilated pinion 11 driven by a segment gear 12 on the countershaft 6, the pinion 11 comprising four series of teeth separated by curved concave pe ripheral faces 13, the gear 12 having a single series of teeth, the number of teeth of these two elements being so relatively proportioned as to efiect a quarter revolution of the shaft 1 and a dwell for each revolution of the. gear 12 the curved smooth periphery 14: of the gear 12 cooperating to positively lock the shaft 4L against rotary motion between its intervals of motion.

Each label-supporting deviceor member 2 provides a fiat adhesive-receiving surface 15, which may either be a continuous surface of an adhesive receiving pad or be composed of the three pads 16, 17 and 18, as in the prior application above referred to, the outer faces of the separate pads being flush with each other when in position to receive adhesive. With this construction it will be perceived that when the shaft 4 is rotated the adhesive-receiving surfaces will intermittently move in an endless curved path.

The numeral 19 indicates an adhesive sup ply tank supported on an elevated framework 20, in turn supported on the table 1 and adjacent one of the vertical positions of rest of the label-supporting members, as shown in Fig. 1.

21 represents an adhesive supplying roller dipping into the supply of adhesive, or glu ef in the tank, and 22 represents an adhesive carrier, in the present embodiment a roller, movable transversely of the flat surface 15, and to and fro between said surface and roller 21, the roller 22 being journaled in the sides of a yoke 23 by adjustable gudgeons 24,. said yoke being pivoted on the framework 20 at 25 and having an arm 26, to which is connected a rod 27 having a slot 28 receiving the cam shaft 7. The roller 22 is normally outside the rotary path of the surfaces 15, when glue is being applied to the roller by the supply roller 21. Adjacent the rod 27 the shaft '-1 carries a cam 29, the surface of which is adapted to beengaged by an anti-friction roller 30 on the end of rod 27, and a yielding device, as a spring 31, is attached to another arm 32 of the yoke 23 and to the framework 20, and is adapted to urge roller 22 to the adhesive-receiving surface at proper times during operation of the machine.

In the present embodiment the surfaces 15 come to rest successively adjacent the adhesive carrying roller 22, and at this time this roller is in contact with roller 21, which deposits glue thereon, the roller 22 being urged to this position and held for a sufficient time by the cam 29, which rocks the yoke against the resistance of the spring 31. Just before the surface 15 moves upwardly on its nezgt quarter movement, a part of the cam 29 comes into cooperative relation to the anti-friction roller 30, and permits the spring 31 to move the adhesive carrying roller 22 into a position where its surface will be substantially tangent to or slightly intersect the plane of the surface 15, when this surface first meets the roller as the surface moves up. It will be observed that the distance from the center of rotation to the advance or to the trailing edge of the surface 15 is not the same as to points between these edges, in the present embodiment being greater than for intermediate points, so that the pressure of the roller 22 against the outer portions of this surface may be greater than against intermediate portions, due to the greater tension of the spring 31 when the roller 22 contacts the outer portions. This greater pressure, if of any substantial amount, might cause a thinning of the coat of glue at the intermediate portions of surface 15, so that the entire receiving surface would not be uniformly covered. In consequence the labels which subsequently are coated by surface 15 would have coats of uneven thickness. This uneven coating of the surface 15 is avoided by providing means to compensate for the varying pressure-tension of the spring 31, so that the roller 22 may move progressively over the surface 15 with a substantially constant pressure thereagainst during such movement. In the present case the cam 29 with its operative connectionsto the roller 22, provides this compensating means, being so shaped that it moves the roller 22 into position to apply glue to the advance portion of the surface 15 with a predetermined pressure,

and then it permits the spring 31 to urge the roller 22 a further distance transversely of the surface as the intermediate portion is presented opposite this roller, the cam eventually positively moving the roller in a direction away from the receiving surface as the trailing portion thereof assumes position to receive the glue. Further it will be observed that by this construction the roller 22 may move transversely of the receiving surface 15 for varying amounts, and that the cam 29 variably limits the extent of this transverse movement, allowing a full movement at certain relative positions of the surface 15 and roller 22, and preventing other than a predetermined amount of movement at other relative positions.

It will be understood that the roller 21 is continuously rotated, and that the roller 22 is in turn rotated thereby when in contact therewith, thereby being coated with adhesive, the rotation of roller 21 being effected through a chain 33 engaging with a sprocket wheel 34 on the shaft 7 and another sprocket wheel 35 on a shaft 36 having a gear 37 meshing with a pinion 38 on the roller 21, the pinion 38 also meshing with a pinion 39 on a gage roller 10. A suitable clutch may be interposed in this train of gears so as to throw the glue supplying roller 21 into or out of operation at will.

The operation of the device will be apparent from the foregoing description, and it will be noted that by this device the ob jects hereinbefore referred to are accomplished. The surface 15 moves up from its position adjacent the gluing device, and as it passes the roller 22, the latter contacts progressively with the surface 15, rolling on and off said surface. The spring 31 being set to apply a'certain pressure upon initial contact between the surface 15 and roller 22, this pressure will be maintained substantially constant during the progressive contact referred to, and in consequence the surface will be covered throughout with a. coat of uniform thickness, suitable for the reception of labels or other paper strips, which latter by adhering thereto are thereby coated with adhesive, and may then be secured to other articles, as for instance, the boxes referred to in theprior application. As many changes could be made in the above construction and many apparently widely different embodiments of this invention could be made without departing from the scope thereof, it is intended that all matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. It is also to be understood that the language used in the following claims is intended to cover all of the generic and specific features of the invention herein described, and all statements of the scope of the invention, which, as a matter of language, might be said to fall therebetween.

I claim 1. In an apparatus of the character described, in combination, a flat adhesive receiving surface movable in a curved path, an adhesive carrier movable transversely of said surface, means adapted to cause relative progressive movement between said carrier and surface when in contact with each other, a yielding device adapted to cause pressure between said carrier and surface durin said progressive movement, and means a apted to compensate for the varying pressure tension of said yielding means so as to maintain a substantially constant pressure between said surface and said carrier during said progressive movement.

2. In an apparatus of the character described, in combination, a flat adhesive receiving surface movable in a curved path, an adhesive carrier movable transversely of said surface, means adapted to cause relative progressive movement between said carrier and surface when in contact with each other, a device adapted to press said carrier against said surface during said progressive movement, and means adapted to variably limit the transverse movement of the carrier.

3. In an apparatus of the character described, in combination, a flat adhesive receiving surface, an adhesive carrying roller movable transversely of said surface, means adapted to move said surface progressively past said roller in a curved path, a device adapted to press said roller against said surface, and means adapted to maintain a substantially constant degree of pressure between said roller and surface.

4c. In an apparatus of the character described, in combination, a flat adhesive receivinv surface, an adhesive carrying roller movab le transversely of said surface, means adapted to move said surface progressively past said roller in a curved path, a spring adapted to press said roller against said surface, and means adapted to compensate for the variable tension of said spring so as to maintain a substantially constant pressure between said surface and said carrier.

5. In an apparatus of the character described, in combination, a flat adhesive receiving surface, an adhesive carrying roller movable transversely of said surface, means adapted to move said surface progressively past said roller in a curved path, a spring adapted to press said roller against said surface, and a rotatable cam adapted to compensate for the variable tension of said spring so as to maintain a substantially constant pressure between said surface and said carrier.

6. In an apparatus of the character described, in combination, a flat adhesive receiving surface, an adhesive carrying roller movable transversely of said surface, means adapted to move said surface progressively past said roller in a curved path, a pivoted arm carrying said roller, a cam, operative connections between said cam and arm whereby said cam positively moves said roller in a direction away from said surface,

and a spring adapted to move said arm toward said surface.

7. In an apparatus of the character described, in combination, a label supporting surface, an adhesive supply roller, an adhesive carrying roller movable to and fro between said surface and supply roller, means adapted to move said surface progressively past said adhesive carrying roller, a spring adapted to move said adhesive carrying roller from said other roller to said surface, and means adapted to variably limit the extent of movement of said adhesive carrying roller by said spring so as to cause said last mentioned roller to contact with said surface with a substantially constant pressure during said progressive movement. In testimony whereof I aflix my signature in the presence of two witnesses.

HAROLD CABLE. Witnesses:

L. C. BLUM, H. G. COPPINS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

